Finding the Fourth Proportional to 1,447.28, 2,158.24 and 1,412.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,447.28 : 2,158.24 = 1,412.72 : x
2. Step 2: Convert to fraction form
   1,447.28/2,158.24 = 1,412.72/x
3. Step 3: Cross multiply
   1,447.28x = 2,158.24 × 1,412.72
4. Step 4: Simplify right side
   1,447.28x = 3,048,988.81
5. Step 5: Solve for x
   x = 3,048,988.81/1,447.28
6. Step 6: Final answer
   x = 2,106.70